soot.tagkit.FirstTagAggregator Maven / Gradle / Ivy
package soot.tagkit;
/*-
* #%L
* Soot - a J*va Optimization Framework
* %%
* Copyright (C) 2003 Ondrej Lhotak
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 2.1 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Lesser Public License for more details.
*
* You should have received a copy of the GNU General Lesser Public
* License along with this program. If not, see
* .
* #L%
*/
import java.util.LinkedList;
import soot.Unit;
/**
* A tag aggregator that associates a tag with the first instruction that is tagged with it.
*/
public abstract class FirstTagAggregator extends TagAggregator {
/** Decide whether this tag should be aggregated by this aggregator. */
public abstract boolean wantTag(Tag t);
/** Return name of the resulting aggregated tag. */
public abstract String aggregatedName();
/** Decide whether this tag should be aggregated by this aggregator. */
@Override
public void considerTag(Tag t, Unit u, LinkedList tags, LinkedList units) {
if (units.size() > 0 && units.getLast() == u) {
return;
}
units.add(u);
tags.add(t);
}
}